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Differential induction of transcription for glucocorticoid-responsive genes in cultured rat hepatocytes
V L Nebes1, D DeFranco, S M Morris
1Department of Microbiology, Biochemistry and Molecular Biology, University of Pittsburgh, PA 15261.
Abstract:
Dexamethasone rapidly stimulated transcription of the tyrosine aminotransferase and metallothionein-I genes--but not of the phosphoenolpyruvate carboxykinase gene--in rat hepatocytes cultured in serum-free medium. This differential response was not observed for cyclic AMP. The results suggest that the phosphoenolpyruvate carboxykinase gene--but not the tyrosine aminotransferase and metallothionein-I genes--requires a factor which is permissive for stimulation of transcription by the glucocorticoid receptor.

